The complete guide to OKI Error Codes and how to fix them

Is your OKI printer displaying an error code or fatal error code message?

Find your OKI error code in the table below for instructions on how to resolve your error.

Please contact us if your OKI error code is not listed below, or if your error persists and you require assistance. Speak to an OKI trained technical support specialist on 033 0303 0123, or request a callback. We’re happy to help.

okOKI Technical Support: call 033 0303 0123

Mon-Fri 9am-5pm only. (Closed Sat & Sun.)
UK & Ireland business customers only.

OKI Error Codes

Panel DisplayCauseCheck DetailsResultSolutionRequest a Callback
Inspection is required. 001:ErrorMachine Check Exception hardware fault detection (board failure or poor power supply)Does this error message reappear?YesCycle the power. Replace the CU/PU board.Get Help
Service Call 001 ErrorMachine Check
Exception hardware problem was detected (PCB failure or insufficient power capacity)
(PDL only)
When CE1 was not detected, SC001 occurs
Replace the printer control PCBGet Help
Power Off/On
002:Error
003:Error
005:Error
CPU unexpected exceptionDoes this error message reappear?YesPower OFF/ON

Replace the printer control PCB
Get Help
Recovered from an error. 002:Error xxxxxxxx xxxxxxxx xxxxxxx
003:Error xxxxxxxx xxxxxxxx xxxxxxx
004:Error xxxxxxxx xxxxxxxx xxxxxxx
005:Error xxxxxxxx xxxxxxxx xxxxxxx
006:Error xxxxxxxx xxxxxxxx xxxxxxx
007:Error xxxxxxxx xxxxxxxx xxxxxxx
Program detects the wrong processDoes this error message reappear?YesPush the [OK] button and close the error screen, after a record with all numerical value displayed on LCD. Replace the CU/PU board.Get Help
Recovered from an error.
009:Error Recovered from an error.
010:Error Recovered from an error.
011:Error
Program detects the wrong processPush the [OK] button and close the error screen, after a record with all numerical value displayed on LCD.Get Help
Power Off/On
012:Error
A watchdog timeout occurred due to no system timer interrupt for unknown reasonsDoes this error message reappear?YesPower OFF/ON

Replace the printer control PCB
Get Help
Service Call
020:Error
The CU FW in Nand FLASH has not been detected or a check SUM error has occurredDoes this error message reappear?YesPower OFF/ON

Replace the printer control PCB
Get Help
Power OFF/ON
024:Error
CU Program detects the error for hash on the DIMM slotDoes this error message reappear?YesCycle the power. Replace the CU/ PU board.Get Help
Service Call
024:Error
CU Font ROM Hash ErrorDoes this error message reappear?YesPower OFF/ON

Replace the printer control PCB
Get Help
Inspection is required.
030:Error
Detect the CU RAM Check errorDoes this error message reappear?YesRe-implement the RAM DIMM and turn on the MFP. Replace the CU/ PU board.Get Help
Service Call
030:Error
CU RAM Check ErrorDoes this error message reappear?YesPower OFF/ON

Replace the printer control PCB
Get Help
Inspection is required.
040:Error
Detect the CU EEPROM errorDoes this error message reappear?YesCycle the power. Replace the CU/ PU board.Get Help
Service Call
040: Error
CU EEPROM ErrorDoes this error message reappear?YesPower OFF/ON

Replace the printer control PCB
Get Help
Power Off/On
042:Error
043:Error
045:Error
Flash File System ErrorFailed to access to the Flash ROM that is mounted directly on the CU PCBFormat the Flash forcibly. (This requires caution as it erases NIC-F/W.
The NIC-F/W must be written with the maintenance utility after formatting.) If the error remains replace the printer control PCB
Get Help
Service Call
051: Error
CU Fan Error
Abnormal condition of the CPU cooling fan on the CU PCB
Is the CPU Fan connected properly?


Does it recover from the error by replacing the fan?
No
Yes

No
Connect it properly.
Replace the fan.

Replace the printer control PCB.
Get Help
Power Off/On
052:Error
DMA Abort Error was detected with Image ProcessorDoes this error message reappear?YesPower OFF/ON

Replace the printer control PCB
Get Help
Recovered from an error. 054:Error xxx yyy zzzDetect the communication error between the Controller unit and scanner unitRecord the figures on the LCD, and close the error display.Get Help
Recovered from an error. 055:ErrorController unit cannot detect the scanner unitDoes this error message reappear?

Does this error message reappear?
Yes


Yes
Push the [OK] button and close the error screen, after a record with all numerical value displayed on LCD. Check the connection between the scanner and printer.
Replace the CU/PU board.
Get Help
Inspection is required. 056:ErrorController unit cannot detect the hard diskPower off the MFP and attach the hard disk and power on the MFP.Get Help
Recovered from an error. 057:ErrorDetect the time out between the Controller unit and scanner unit 01 : No ACK for read beginning command 02 : No ACK for read cancel command 03 : No ACK for SIP cancel commandPush the [OK] button and close the error screen, after a record with all numerical value displayed on LCD.Get Help
Recovered from an error. 058:ErrorDetect the error at scanner control section 01 : SIP internal error 02 : Scan Model internal error 03 : SPB internal errorPush the [OK] button and close the error screen, after a record with all numerical value displayed on LCD.Get Help
Inspection is required. 067:ErrorDetect the communication error with the Sleep Mode interface supervisor program.Does this error recur?YesCycle the power. Replace the CU/PU board.Get Help
Service Call
067: Error
A communication error was detected during communication with the Sleep Mode interface monitoring program.If power cycling does not solve the problem maintenance by a service engineer is requiredGet Help
Inspection is required. 069:ErrorMalfunction of the NIC chip was detected. Does this error recur?YesCycle the power. Replace the CU/PU board.Get Help
Service Call
069:Error
Malfunction of the NIC chip was detectedDoes this error recur?YesPower OFF/ON

Replace the printer control PCB
Get Help
Power OFF/ON 070:ErrorA PSE firmware error was detected.If display the address on the LCD, record the figures and close the error display and cycle the power.Get Help
Power Off/On
070:Error
Detection of abnormal condition of the PostScript firmwareDoes this error recur?YesPower OFF/ON

Replace the printer control PCB
Get Help
Power Off/On
072:Error
I/F error between PU and CUDoes this error recur?YesPower OFF/ON

Replace the printer control PCB
Get Help
Power Off/On
073:Error
xxxxxxxx
Detection of abnormal condition during image data expansionDoes this error recur?YesPower OFF/ON

Replace the printer control PCB
Get Help
Power OFF/ON 073:Error c/ xxxxxxxxDetect the Video circuit over run.Record the figures on the lower right side of the LCD, and cycle the power.Get Help
Power Off/On
074:Error
xxxxxxxx
075:Error
xxxxxxxx
Detection of abnormal condition during image data expansionDoes this error recur?YesPower OFF/ON

Replace the printer control PCB
Get Help
Power OFF/ON 075:Error c/ xxxxxxxxVideo error. An error was detected in expanding image data.Does this error recur?YesCycle the power. Replace the CU/PU board.Get Help
Power OFF/ON 077:ErrorVIC Illegal Decomp ErrorDoes this error recur?YesCycle the power. Replace the CU/PU board.Get Help
Power Off/On
077:Error xx
Detection of abnormal condition during image data expansionDoes this error recur?YesPower OFF/ON

Replace the printer control PCB
Get Help
Recovered from an error. 078:ErrorCommunication Error with Operator Panel UnitDoes this error recur?YesPush the [OK] button and close the error screen, after a record with all numerical value displayed on LCD. Replace the CU/PU board.Get Help
Service Call
081:Error
Does this error recur?YesPower OFF/ON

Replace the printer control PCB
Get Help
Inspection is required. 090:ErrorDetect the error at stapler unit.Does this error recur?YesCheck the stapler unit and cable. At first change the stapler unit, and if it becomes the error again, change the cable. Replace the CU/PU board. Get Help
Service Call
104:Error
The engine EEPROM implementation check at power on showed no problem, but after that a read/write error was detectedDoes this error recur?YesPower OFF/ON

Replace the printer control PCB
Get Help
Inspection is required. 105:ErrorNot detect the EEPROM at power onDoes this error recur?YesCycle the power. Replace the CU/PU board.Get Help
Service Call
106:Error
Abnormal engine control logicDoes this error recur?YesPower OFF/ON

Replace the printer control PCB
Get Help
Service Call
108:Error
01: Detection of a watchdog timer errorDoes this error recur?YesPower OFF/ON

Replace the printer control PCB
Get Help
02: Detection of an undefined interruptionDoes this error recur?YesPower OFF/ON

Replace the printer control PCB
Get Help
03: Runaway of the CPU on the PU due to noise etc.Does this error recur?YesPower OFF/ON

Replace the printer control PCB
Get Help
04: Runaway of the Port CPU due to noise etc.Does this error recur?YesPower OFF/ON

Replace the printer control PCB
Get Help
05: Failure of Access to the Dcon circuit of the printer control PCBDoes this error recur?YesPower OFF/ON

Replace the printer control PCB
Get Help
09: Detection of an error in clock adjustment to the duplex unitDoes this error message reappear after power restoration

Does this error message reappear after power restoration?
Yes


Yes
Replace the unit concerned


Replace the Printer Control PCB
Get Help
0B: Detection of an error in clock adjustment to tray 2 Does this error message reappear after power restoration

Does this error message reappear after power restoration?
Yes


Yes
Replace the unit concerned


Replace the Printer Control PCB
Get Help
0C: Detection of an error in clock adjustment to tray 3Does this error message reappear after power restoration

Does this error message reappear after power restoration?
Yes


Yes
Replace the unit concerned


Replace the Printer Control PCB
Get Help
0D: Detection of a error in clock adjustment to tray 4Does this error message reappear after power restoration

Does this error message reappear after power restoration?
Yes


Yes
Replace the unit concerned


Replace the Printer Control PCB
Get Help
0E: Detection of a error in clock adjustment to tray 5Does this error message reappear after power restoration

Does this error message reappear after power restoration?
Yes


Yes
Replace the unit concerned


Replace the Printer Control PCB
Get Help
0F: Communication failure with the spot color PCBDoes this error recur?

Does this error recur?
Yes

Yes
Power OFF/ON

Replace the spot color PCB

Replace the printer control PCB
Get Help
10: Runaway of the Driver CPU due to noise etc.Does this error recur?

Does this error recur?
Yes

Yes
Power OFF/ON

Replace the driver relay PCB

Replace the printer control PCB
Get Help
Service Call
111:Error
A duplex unit for another model was detectedIs a duplex unit provided for this model installed?YesInstall a correct duplex unitGet Help
Service Call
112:Error
A 2nd Tray for another model was detectedIs a 2nd Tray provided for this model installed?YesInstall a correct 2nd TrayGet Help
Service Call
113:Error
A 3rd Tray for another model was detectedIs a 3rd Tray provided for this model installed?YesInstall a correct 3rd TrayGet Help
Service Call
114:Error
A 4th Tray for another model was detectedIs a 4th Tray provided for this model installed?YesInstall a correct 4th TrayGet Help
Service Call
115:Error
A 5th Tray for another model was detectedIs a 5th Tray provided for this model installed?YesInstall a correct 5th TrayGet Help
Service Call
121:Error
High Voltage power supply interface errorIs the fuse on the printer control PCB blown?

Is the cable connecting the printer control PCB to the high voltage power supply unit connected properly?



Is there any defective contact point?
YesReplace the printer control PCB (then check the following)

Re-connect it properly.

Check for defective contact points of the high voltage system

Replace the high voltage power supply unit.
Get Help
Inspection is required. 122:ErrorLow voltage FAN errorIs the FAN of the low voltage power supply block working?


Is the FAN connector connected correctly?
No


Yes

No
Yes

Check to make sure connection of the FAN connector. Replace the low voltage power supply unit. Replace the FAN motor. Replace the low voltage power supply unit.Get Help
Service Call
123:Error
Abnormal environment humidity or unconnected humidity sensorDoes this error recur?


Does this error recur?
Yes


Yes
Power OFF/ON

Replace the environmental sensor board and the FFC

Replace the printer control PCB
Get Help
Service Call
124:Error
Abnormal environment humidityDoes this error recur?


Does this error recur?
Yes


Yes
Power OFF/ON

Replace the environmental sensor board and the FFC

Replace the printer control PCB
Get Help
Service Call
125:Error
Multi-purpose Tray
Home Error
Does the motor run in the motor testing of the PU self-diagnostic mode?Yes





No
Check the sensor cable for a break or short and the connector semi-locking relay PCB and the printer control PCB for abnormal condition.

Check the hopping motor and the gear train for abnormal condition.
Get Help
Power Off and wait for a while
126: Condensing Error
Dew condensation in the printer was detected.This error tends to occur after a printer is carried in from the outsides.
Leave the printer for 2 hours to half a day at room temperature, and turn on the power.

Does this error recur?


Does this error recur?
Yes


Yes
After leaving the printer at room temperature, turn on the power again.



Replace the environmental sensor board and the FFC.

Replace the printer control PCB
Get Help
Inspection is required. 127:ErrorFuser FAN errorIs the FAN connector connected properly?
Does this error recur?
No
Yes
Yes
Re-connect it properly. Replace the FAN motor. Replace the CU/PU board.Get Help
Service Call
128:Error
01: Fuser Exhaust
Fan 1
02: Low Voltage Fan
03: PU Fan
05: Station 1 ID
Intake Fan
09: Second Transfer
Absorption Fan
0A: Fuser Intake Fan
0B: Station 2 ID
Intake Fan
0C: Duplex Fan
0D: Fuser Exhaust
Fan 2
0E: Station 3 ID
Intake Fan
0F: Station 4 ID
Intake Fan
10: Station 5 ID
Intake Fan
Is the cable to respective fans connected properly?

Does this error recur?
No


Yes

No

Re-connect it properly.


Replace the fan motor.

Replace the applicable PCB
01: Driver relay PCB
02: Printer Control PCB
03: Printer Control PCB
05: Driver Relay PCB
09: Rail unit relay PCB
0A: Driver relay PCB
0B: Driver relay PCB
0C: Duplex unit PCB
0D Driver relay PCB
0E: Driver relay PCB
0F: Driver relay PCB
10: Driver relay PCB

Get Help
Service Call
134: Error
LED head detection error
(01=K, 02=C, 03=M, 04=Y, 05=W/CL)
Is the fuse blown?
134-5: Spot color PCB
134-01 to 04: Printer
control PCB




Does this error recur?

Does this error recur?
Yes




No


Yes

Yes
Replace the PCB.
Correct the FFC connection condition between the LED head and the PCB

Correct the FFC connection condition.

Replace the LED head unit

Replace either applicable PCB.
134-01 to 04:
Printer control PCB
134-05: Spot color PCB
Get Help
Service Call
135: Error
01: Tray 1 Lift-up
Motor Error
02: Tray 2 Lift-up
Motor Error
03: Tray 3 Lift-up
Motor Error
04: Tray 4 Lift-up
Motor Error
05: Tray 5 Lift-up
Motor Error
Remove the paper cassette. Does the motor run in motor testing?



Is the fuse on the PCB blown?

Is the motor resistant value abnormal, or is the motor wire disconnected or shorted?
Yes

No


Yes

Yes

No
Replace the paper cassette.

Do the following check on motors and PCBs:

Replace the PCB.

Replace the motor.

Replace the PCB.
01: Printer Control PCB
02 to 05: Option tray PCB
Get Help
07: Belt Motor Lock ErrorRemove the belt unit. Does the motor run in motor testing?



Is there any abnormality with the mechanism, such as a blown motor fuse, a disconnected or shorted motor wire, and a broken gear?
Yes

No


Yes


No
Replace the Belt.

Do the following check on motors and PCBs:

Replace the motor, cable and belt motor driving mechanism.

Replace the printer control PCB
Get Help
Service Call
135: Error
09: Fuser Motor Lock ErrorRemove the fuser. Does the motor run in motor testing?



Is there any abnormality with the mechanism, such as a blown motor fuse, a disconnected or shorted motor wire and a broken gear?
Yes

No


Yes


No
Replace the fuser.

Do the following check on motors and PCBs:

Replace the motor, cable, fuser motor driving mechanism.

Replace the printer control PCB
Get Help
11: Station 1 ID Motor Lock Error
12: Station 2 ID Motor Lock Error
13: Station 3 ID Motor Lock Error
14: Station 4 ID Motor Lock Error
15: Station 5 ID Motor Lock Error
Remove the ID unit. Does the motor run in motor testing?



Is the motor fuse blown?

Is the motor wire broken or shorted

Does the error recur?
Yes

No


Yes

No

Yes
Replace the ID unit.

Do the following check on motors and PCBs:

Replace the motor.

Replace the driver relay PCB

Replace the ID motor driving mechanism
Get Help
Inspection is required. 142:ErrorDetected a malfunction of the ID Up/Down mechanism.Connected properly?YesCheck the connection of ID Up/Down motor and sensor. Replace the CU/PU board.Get Help
Service Call
143: Error
Image drum Up/Down position detection error
(01=K, 02=C, 03=M, 04=Y, 05=W/CL)
Reinstall the ID unit and the belt unit and then power off/on. Does the error recur?

Detach the ID unit. Remove the rear cover and inspect the initial movement. Is there any abnormality with up/down movement?
Yes



No

Yes
Inspect the following:



Replace the ID unit.

Inspect the driver replay PCB, ID up/down sensor, ID motor driving mechanism.
Get Help
Service Call
147: Error
Toner supply motor
error (01=K, 02=C, 03=M, 04=Y, 05=W/CL)
Remove the toner cartridge. Does the motor run in motor testing?



Is the motor resistant value abnormal, the motor wire disconnected or shorted?

Does the error recur?
Yes

No


Yes

No

Yes
Replace the toner cartridge.

Do the following check on motors and PCBs

Replace the motor.

Replace the driver relay PCB

Replace the Toner supply mechanism.
Get Help
Inspection is required. 154:ErrorThe belt unit fuse blown out.Get Help
Inspection is required. 155:ErrorThe fuser unit fuse blown out.Get Help
Inspection is required. 160:ErrorToner sensor detection error (160=Y, 161=M, 162=C, 163=K) This error does not occur with the factory default settings.Because it is an error not to be occur in the in front of the user, change the CU/PU board when it is displayed in front of the user.Get Help
Inspection is required. 161:ErrorToner sensor detection error (160=Y, 161=M, 162=C, 163=K) This error does not occur with the factory default settings.Because it is an error not to be occur in the in front of the user, change the CU/PU board when it is displayed in front of the user.Get Help
Inspection is required. 162:ErrorToner sensor detection error (160=Y, 161=M, 162=C, 163=K) This error does not occur with the factory default settings.Is the toner cartridge installed? Is the lock lever of the toner set? Does this error recur?No

No

Yes
Install the toner cartridge.
Move the lock lever of toner cartridge to the lock position. Replace the toner sensor assembly.
Get Help
Inspection is required. 163:ErrorToner sensor detection error (160=Y, 161=M, 162=C, 163=K) This error does not occur with the factory default settings.Is the toner cartridge installed? Is the lock lever of the toner set? Does this error recur?No

No

Yes
Install the toner cartridge.
Move the lock lever of toner cartridge to the lock position. Replace the toner sensor assembly.
Get Help
Service Call
163: Error
Toner sensor detection error
(01=K, 02=C, 03=M, 04=Y, 05=W/CL)
This error does not occur with the factory default settings.
Is the stopper (orange) removed?

Is the ID unit prism soiled?


Does this error recur?


Does this error recur?
No


Yes
No

Yes


Yes
Remove the stopper.


Clean it.
Replace the ID unit.

Replace the driver replay PCB

Replace the toner low sensor board and the cable.
Get Help
Service Call
166: Error
An abnormality was detected with the power supply temperature thermistor.
01: The power supply thermistor is detected as shorted.
02: The power supply thermistor is detected as open.
03: The power supply thermistor indicates high temperature error
04: The power supply thermistor indicates low temperature error
Does this error recur?

YesPower OFF/ON

Replace the printer control PCB
Get Help
Service Call
167: Error
Thermistor slope errorIs the error message displayed?

Does this error recur?
Yes

Yes
Restore the power

After leaving the printer for 30 minutes, turn on the power
Get Help
Service Call
168: Error
01: Thermistor is
detected as shorted
02: Thermistor is
detected as open
03: Thermistor is
indicates high
temperature error
04: Thermistor indicates
low temperature
error
Is the error message displayed?

Does this error recur?
Yes

Yes
Restore the power

After leaving the printer for 30 minutes, turn on the power again. When the power is restored for the 168-03 error, the display changes to Service Call 994: Error
Get Help
Service Call
169: Error
01: Thermistor is detected as shorted
02: Thermistor is detected as open
03: Thermistor is indicates high temperature error
04: Thermistor indicates low temperature error
Is the error message displayed?

Does this error recur?
Yes

Yes
Restore the power.

After leaving the printer for 30 minutes, turn on the power again.
Get Help
Service Call
170: Error
171: Error
Short circuit (170) or open circuit (171) of the fuser thermistor was detected.Does this error recur?YesRestore the power.
Replace the fuser unit.
Get Help
Service Call
172: Error
173: Error
An abnormal (172: high or 173: low)
temperature of the fuser thermistor was
detected
Does this error recur?YesRestore the power.
Replace the fuser unit.
When the power is restored, the display may change to Service Call 994: Error in some cases.
Get Help
Service Call
181: Error
182: Error
183: Error
184: Error
185: Error
Option unit I/F error
(181 = Duplex Unit.
182, 183, 184, 185 = Optional Tray)
Does this error recur?YesRestore the power.
Check to make sure the contact points of the connector and replace the optional unit

Get Help
Service Call
188: Error
01: Error in
communication
with Port CPU
Does this error recur?YesPower OFF/ON

Replace the printer control PCB
Get Help
02: Error in
communication
with Driver CPU
Does this error recur?YesReplace the Driver PCBGet Help
Power Off/On
190: Error
System memory overflowDoes this error recur?YesPower OFF/ON

Replace the printer control PCB
Get Help
Power Off/On
203: Error
204: Error
CU program error (not occur in normal operation)Does this error recur? YesPower OFF/ON

Replace the printer control PCB
Get Help
Power Off/On
207: Error
208: Error
CU program error (not occur in normal operation)Does this error recur? YesPower OFF/ON

Replace the printer control PCB
Get Help
Power Off/On
213: Error
214: Error
CU program error (not occur in normal operation)Does this error recur? YesPower OFF/ON

Replace the printer control PCB
Get Help
Serice Call
230: Error
Tag Reader MissingDoes this error recur?

Does this error recur?
Yes

Yes
Power OFF/ON

Replace the tag reader/writer PCB and the FFC.

Replace the printer control PCB
Get Help
Service Call
231: Error
01: PU-Tag Reader Interface Error
02: Tag Reader circuit abnormality
03: Tag Interface error
Does this error recur?

Does this error recur?
Yes

Yes
Power OFF/ON

Replace the tag reader/writer PCB and the FFC.

Replace the printer control PCB

Get Help
Service Call
241: Error

245 Error
Engine Program
Memory Error
241: DUPLEX Flash memory error
242: Option Tray 2
243: Option Tray 3
244: Option Tray 4
245: Option Tray 5
Does this error recur?YesPower OFF/ON

241: Replace the DUPLEX PCB.
242-5: Replace the option try PCB

Get Help
Service Call
247: Error
Engine PORT CPU
Program Memory Error
Does this error recur?Yes

Power OFF/ON

Replace the printer control PCB

Get Help
Service Call
249: Error
Engine DRIVER
CPU Program Memory Error
Does this error recur?Yes

Power OFF/ON

Replace the printer control PCB

Get Help
Power Off/On
250: Error
Secure File Erasing ErrorAn encrypted file erasing error was detected.
Did the user accept to execute HDD ERASE?

ADMIN MENU
HDD ERASE
Informing the user of the necessity to execute Disk
ERASE to delete the encrypted file and restore the HDD defaults
Get Help
Service Call
251: Error
Secure Disk Erasing ErrorAn Error was detected during Disk ERASE. Does this error message reappear?YesPower OFF/ON

Replace the HDD
Get Help
Service Call
254: Error
An unexpected error occurred during initialization of the Security mode.
Error cause information is displayed after the error code number
Does this error message reappear?YesPower OFF/ON

Regenerate an encryption key. If it doesn't solve the problem, replace the CU PCB

Get Help
Service Call
257: Error
An unexpected error occurred during initialization of the HDD
Error cause information is displayed after the error code number
Does this error message reappear?YesPower OFF/ON

Format the HDD again. If it does not solve the problem, replace the HDD
Get Help
Error 310The top cover is open.Press the [Details] button for help.Get Help
Error 311The front cover is open.Press the [Details] button for help.Get Help
Error 320The fuser unit is not installed correctly.Remove and re-install the fuser unit.

Press the [Details] button for help.
Get Help
Error 330The belt unit is not installed correctly.Remove and re-install the belt unit.

Press the [Details] button for help.
Get Help
Error
340
341
342
343
The image drum is not installed correctly.

Error 340 - Yellow Image Drum
Error 341 - Magenta Image Drum
Error 342 - Cyan Image Drum
Error 343 - Black Image Drum
Remove and re-install the image drum.

Press the [Details] button for help.
Get Help
Error 348The fuser unit is not installed correctly.Reset fuser unit.

Press the [Details] button for help.
Get Help
Error
350
351
352
353
Image Drum Life. The image drum indicated on the screen has reached its lifetime. Replace the image drum with a new one.

Error 350 - Yellow Image Drum
Error 351 - Magenta Image Drum
Error 352 - Cyan Image Drum
Error 353 - Black Image Drum
Opening and closing the output tray can resume printing for a while.

However, you should replace the image drum as soon as possible.

Press the [Details] button for help.
Get Help
Error 354The fuser has reached its life.

Replace the fuser unit with a new one.
Opening and closing the output tray can resume printing for a while. Replace with a new one as soon as possible for maintaining the print quality.

Install new fuser unit.

Press the [Details] button for help.
Get Help
Error 355The transfer belt unit has reached its life.

Replace the belt unit with a new one.
Opening and closing the output tray can resume printing for a while.

Replace with a new transfer belt unit as soon as possible to maintain print quality.

Press the [Details] button for help.
Get Help
Error 356The waste toner is full.Opening and closing the output tray can resume printing for a while.

Replace with a new belt unit as soon as possible to maintain print quality.

Press the [Details] button for help.
Get Help
Error 360The Duplex Unit is open (removed).The 2-sided printing unit is not set correctly.

Press the [Details] button for help.
Get Help
Error
370
371
372
373
A paper jam has occurred and paper remains near the Duplex Unit.Remove the paper.

Press the [Details] button for help.
Get Help
Error 380Paper jam has occurred. Open the front cover and remove the paper.

Press the [Details] button for help.
Get Help
Error
381
382
383
384
385
389
A paper jam has occurred under the image drum. Remove the paper.

Press the [Details] button for help.
Get Help
Error 390Paper jam has occurred. Open the front cover and remove the paper.

Press the [Details] button for help.
Get Help
Error 391Paper jam has occurred in Tray 1. Pull out Tray 1 cassette and remove the paper.

Press the [Details] button for help.
Get Help
Error 392Paper jam has occurred in Tray 2. Pull out Tray 2 cassette and remove the paper.

Press the [Details] button for help.
Get Help
Error 393Paper jam has occurred in Tray 3. Pull out Tray 3 cassette and remove the paper.

Press the [Details] button for help.
Get Help
Error 394Paper jam has occurred in Tray 4. Pull out Tray 4 cassette and remove the paper.

Press the [Details] button for help.
Get Help
Error 400Paper size error.

Reset paper in tray.

Press the [Details] button for help.
Inappropriate size paper was fed from a tray. Check the paper in the tray or check for Multiple-feed.

Open and close cover to perform recovery printing, and continue.
Get Help
Error 401Multiple sheets of paper have been fed. Warns that inappropriate long paper has been fed from tray.Reset paper in tray.

Press the [Details] button for help.
Get Help
Error 409Printing was stopped. Rear Output Tray was opened during printing. Open the Output Tray. Open the output tray and remove the jammed paper remaining inside of the unit.Get Help
Error
410
411
412
413
Toner empty. Replace with new Toner Cartridge.

C: Cyan (blue)
M: Magenta
Y: Yellow
K: Black
Opening and closing the output tray can resume printing for a while, but it may damage the image drum. Replace the toner cartridge with a new one as soon as possible.Get Help
Error
414
415
Waste Toner Full. Replace with new Toner Cartridge.

Y: Yellow,
M: Magenta
Opening and closing the output tray can resume printing for a while, but it may damage the image drum. Replace the toner cartridge with a new one as soon as possible.Get Help
Error 540Image Drum Sensor Error. Check Image Drum.

Something is wrong with the Yellow Image Drum sensor.
Uninstall the image drum, and then install it again.

If the message persists, uninstall the toner cartridge and install it again.

If the toner cartridge is not installed, install it.

Press the [Details] button for help.
Get Help
Error 541Image Drum Sensor Error. Check Image Drum.

Something is wrong with the Magenta Image Drum sensor.
Uninstall the image drum, and then install it again.

If the message persists, uninstall the toner cartridge and install it again.

If the toner cartridge is not installed, install it.

Press the [Details] button for help.
Get Help
Error 542Image Drum Sensor Error. Check Image Drum.

Something is wrong with the Cyan Image Drum sensor.
Uninstall the image drum, and then install it again.

If the message persists, uninstall the toner cartridge and install it again.

If the toner cartridge is not installed, install it.

Press the [Details] button for help.
Get Help
Error 543Image Drum Sensor Error. Check Image Drum.

Something is wrong with the Black Image Drum sensor.
Uninstall the image drum, and then install it again.

If the message persists, uninstall the toner cartridge and install it again.

If the toner cartridge is not installed, install it.

Press the [Details] button for help.
Get Help
Error
544
545
546
547
A color toner cartridge indicated on the screen is not properly installed.

Error 544 - Yellow
Error 545 - Magenta
Error 546 - Cyan
Error 547 - Black
The toner cannot be detected.

Make sure that the lever on the toner cartridge is fully turned and locked, and the protective tape is removed.

Press the [Details] button for help.
Get Help
Error
550
551
552
553
A non-recommended toner is installed.

Error 550 - Yellow
Error 551 - Magenta
Error 552 - Cyan
Error 553 - Black
Install recommended OKI toner.

Press the [Details] button for help.
Get Help
Error
554
555
556
557
A non-recommended toner is installed.

Error 554 - Yellow
Error 555 - Magenta
Error 556 - Cyan
Error 557 - Black
Install recommended OKI toner.

Press the [Details] button for help.
Get Help
Error
560
561
562
563
Toner empty error because a image drum has reached its life.

Error 560 - Yellow Image Drum
Error 561 - Magenta Image Drum
Error 562 - Cyan Image Drum
Error 563 - Black Image Drum
Install new image drum.

Press the [Details] button for help.
Get Help
Error
564
565
566
567
Image drum has reached end of life.

Error 564 - Yellow Image Drum
Error 565 - Magenta Image Drum
Error 566 - Cyan Image Drum
Error 567 - Black Image Drum
Temporarily prolong life by pressing OK button.

Install new image drum.

Press the [Details] button for help.
Get Help
Error 581Rear Output Tray is open, so 2-sided printing is disabled.2-sided printing (duplex printing) failed because the rear output tray is open.

Close the rear output tray and tray again.
Get Help
Error 587The rear cover is open.Press the [Details] button for help.Get Help
Error 610The Yellow toner cartridge is not installed.Install the toner cartridge.

Press the [Details] button for help.
Get Help
Error 611The Magenta toner cartridge is not installed.Install the toner cartridge.

Press the [Details] button for help.
Get Help
Error 612The Cyan toner cartridge is not installed.Install the toner cartridge.

Press the [Details] button for help.
Get Help
Error 613The Black toner cartridge is not installed.Install the toner cartridge.

Press the [Details] button for help.
Get Help
Error
614
615
616
617
A non-recommended toner is installed.

Error 614 - Yellow
Error 615 - Magenta
Error 616 - Cyan
Error 617 - Black
Install recommended OKI toner.

Press the [Details] button for help.
Get Help
Error
620
621
622
623
A non-recommended toner is installed.

Error 620 - Yellow
Error 621 - Magenta
Error 622 - Cyan
Error 623 - Black
Install recommended OKI toner.

Press the [Details] button for help.
Get Help
Error
680
681
682
683
Image drum has reached end of life.

Error 680 - Yellow Image Drum
Error 681 - Magenta Image Drum
Error 682 - Cyan Image Drum
Error 683 - Black Image Drum
Install new image drum.

Press the [Details] button for help.
Get Help
Error 709Caution, unknown Consumable detected. Go to User Manual "Trouble Shooting" to restore operation.

You can use any consumables in your product, but you must accept the risks of using non-genuine consumables.

If the use of non-genuine consumables causes damage to the product or results in your product not functioning to its full specification, then such damage or effect on the product is not covered by warranty.
To accept these risks and to restore function:

1. Turn off your product
2. Press and hold the (CLEAR) button and turn on your product
3. After start up, release the (CLEAR) button. Note: This operation will be recorded for future reference
Get Help
Power Off/On
901: Error
902: Error
Short circuit (901) or open circuit (902) with the belt thermistor was detectedCheck the belt thermistor wiring. Is there any abnormal condition with the belt unit, contact substrate which is the tag terminal PCB of the printer unit, or the cable?Yes


No
Replace the part or the belt unit.

Replace the driver relay PCB
Get Help
Power Off/On
903: Error
904: Error
The belt thermistor detected abnormal temperature.
903: too high
904: too low
Check the belt thermistor wiring. Is there any abnormal condition with the belt unit, contact substrate which is the tag terminal PCB of the printer unit, or the cable?Yes


No
Replace the part or the belt unit.

Replace the driver relay PCB
Get Help
Inspection is required.
980 : Error
Media jamming error around fuser.Media is jammed by entangling around the fuser.
Turn off the MFP.
Replace the fuser.
Get Help
Inspection is required.
990 : Error
Waste toner sensor detection errorIs the K toner cartridge installed?

Does the error occur again?
No


Yes
Install the K toner cartridge.

Be sure of cable connection, and then perform board replacement.
Get Help
Service Call
993: Error
An error was detected with the paper thickness sensor power cableDoes this error recur?

Does this error recur?
Yes


Yes
Power OFF/ON

Replace the paper thickness sensor and the cable

Replace the printer control PCB
Get Help
Service Call
994: Error
A fuser where a high temperaure error was detected is installedDoes this error recur?YesPower OFF/ON

Replace the fuser unit
Get Help
Power Off/On
FOC: Error
CU program errorDoes this error recur?YesPower OFF/ON

Replace the Printer control PCB
Get Help
Power Off/On
FFF: Error
CU program errorDoes this error recur?YesPower OFF/ON

Replace the Printer control PCB
Get Help
Note:
Service call errors, 171: Error, 166-02: Error, 168-02: Error, 169-02: Error 0169-04: Error and 902: Error can occur when the printer temperature is under 0 degrees centigrade; therefore, if the printer temperature is low, turn on the printer after the printer temperature has risen enough.

OKI Error Code Support

okOKI Technical Support: Mon-Fri 9am-5pm only. (Closed Sat & Sun.)
UK & Ireland business customers only.

We aim to respond to all support requests within 4 working hours.